# def test_return():
#     return 1, True, "hello"
#
#
# x, y, z = test_return()
# print(x)
# print(y)
# print(z)

# def test1(*args):
#     print(args)
#     print(args[0])
#
#
# print(test1(1, 2, 3, 4))

# def test(**kwargs):
#     print(kwargs)
#
#
# test(name='zhangsan', age=18)

# def test(x, y):
#     return x + y
#
# def test1():
#     print(test(1, 2))
#
# test1()
#
#
# my_list = [1, 2, 3, 4, 5]
# print(my_list[::-1])
# print(sorted(my_list, reverse=True))

# def test(fun):
#     print(fun(1, 2))
#
#
# test(lambda x, y: x + y)


my_set = {1, 2, 3, 4, 5, 6, 7, 8, 9}
if 3 in my_set:
    print("yes")
else:
    print("no")
